 html, 
 body, 
 div, 
 a, 
 ul, 
 li, 
 span, 
 table, 
 td, 
 tr
{
    margin: 0;
    padding: 0;
    list-style: none;
    text-decoration: none;
}
html, 
body
{
    height: 100%;
}
.content{
    width: 100%;
    height: 100%;
    overflow-y: hidden;
}
.table{
    width: 100%;
    border-collapse: collapse;
}
.menu-td{
    width: 230px;
    height: 100%;
    /* background:#171717; */
    background: black;
}
.menu{
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.logo{
    width: 100%;
    height: 80px;
}
.logo img{
    width: 114px;
    display: block;
    margin: 0 auto;
}
.text-1{
    width: 100%;
    height: 36px;
    color: #686868;
    text-align: center;
    font-size: 12px;
}
.menu-item-1{
    width: 100%;
    height: 54px;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
}
.menu-item-1 a{
    color: black;
}
.czs-circle{
    display: block;
    text-align: center;
    font-size: 20px;
    font-weight: 200;
}
.czs-square{
    display: block;
    text-align: center;
    font-size: 20px;
    font-weight: 200;
}
.czs-triangle{
    display: block;
    text-align: center;
    font-size: 20px;
    font-weight: 200;
}
.czs-camber{
    display: block;
    text-align: center;
    font-size: 20px;
    font-weight: 200;
}
.menu-1{
    width: 100%;
    height: 300px;
    overflow: scroll;
    overflow-x:hidden;
}
::-webkit-scrollbar{
    width: 4px;
    height: 10px;
}
::-webkit-scrollbar-thumb{
    background: #666666;
}
.menu-2, .menu-3, .menu-4{
    height: 0;
    width: 100%;
    overflow: hidden;
}
.menu-1 li a:hover{
    background: #222222;
    color: white;
}
.menu-1 li a{
    width: 100%;
    height: 35px;
    font-size: 12px;
    color: #686868;
    display: flex;
    align-items: center;
    justify-content: center;
}
.menu-item-2 a:hover, .menu-item-3 a:hover, .menu-item-4 a:hover{
    width: 100%;
    height: 54px;
    text-align: center;
    background: #fff;
    color: #000;
}
.menu-item-2, .menu-item-3, .menu-item-4{
    width: 100%;
    height: 54px;
    background:black;
    display: flex;
    align-items: center;
    justify-content: center;
}
.menu-item-2 a, .menu-item-3 a, .menu-item-4 a{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #ffffff;
}
.text-2{
    width: 100px;
    height: 30px;
    font-size: 12px;
    color: #686868;
    display: block;
    text-align: center;
}
.text-2-s{
    width: 100%;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.text-2:hover{
    color: #ffffff;
}
.right{
    width: 100%;
    height: 100vh;
    float: right;
}